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| import importlib | |
| from typing import List, Any, Tuple, Optional | |
| from taming.data.helper_types import BoundingBox, Annotation | |
| # source: seaborn, color palette tab10 | |
| COLOR_PALETTE = [(30, 118, 179), (255, 126, 13), (43, 159, 43), (213, 38, 39), (147, 102, 188), | |
| (139, 85, 74), (226, 118, 193), (126, 126, 126), (187, 188, 33), (22, 189, 206)] | |
| BLACK = (0, 0, 0) | |
| GRAY_75 = (63, 63, 63) | |
| GRAY_50 = (127, 127, 127) | |
| GRAY_25 = (191, 191, 191) | |
| WHITE = (255, 255, 255) | |
| FULL_CROP = (0., 0., 1., 1.) | |
| def intersection_area(rectangle1: BoundingBox, rectangle2: BoundingBox) -> float: | |
| """ | |
| Give intersection area of two rectangles. | |
| @param rectangle1: (x0, y0, w, h) of first rectangle | |
| @param rectangle2: (x0, y0, w, h) of second rectangle | |
| """ | |
| rectangle1 = rectangle1[0], rectangle1[1], rectangle1[0] + rectangle1[2], rectangle1[1] + rectangle1[3] | |
| rectangle2 = rectangle2[0], rectangle2[1], rectangle2[0] + rectangle2[2], rectangle2[1] + rectangle2[3] | |
| x_overlap = max(0., min(rectangle1[2], rectangle2[2]) - max(rectangle1[0], rectangle2[0])) | |
| y_overlap = max(0., min(rectangle1[3], rectangle2[3]) - max(rectangle1[1], rectangle2[1])) | |
| return x_overlap * y_overlap | |
| def horizontally_flip_bbox(bbox: BoundingBox) -> BoundingBox: | |
| return 1 - (bbox[0] + bbox[2]), bbox[1], bbox[2], bbox[3] | |
| def absolute_bbox(relative_bbox: BoundingBox, width: int, height: int) -> Tuple[int, int, int, int]: | |
| bbox = relative_bbox | |
| bbox = bbox[0] * width, bbox[1] * height, (bbox[0] + bbox[2]) * width, (bbox[1] + bbox[3]) * height | |
| return int(bbox[0]), int(bbox[1]), int(bbox[2]), int(bbox[3]) | |
| def pad_list(list_: List, pad_element: Any, pad_to_length: int) -> List: | |
| return list_ + [pad_element for _ in range(pad_to_length - len(list_))] | |
| def rescale_annotations(annotations: List[Annotation], crop_coordinates: BoundingBox, flip: bool) -> \ | |
| List[Annotation]: | |
| def clamp(x: float): | |
| return max(min(x, 1.), 0.) | |
| def rescale_bbox(bbox: BoundingBox) -> BoundingBox: | |
| x0 = clamp((bbox[0] - crop_coordinates[0]) / crop_coordinates[2]) | |
| y0 = clamp((bbox[1] - crop_coordinates[1]) / crop_coordinates[3]) | |
| w = min(bbox[2] / crop_coordinates[2], 1 - x0) | |
| h = min(bbox[3] / crop_coordinates[3], 1 - y0) | |
| if flip: | |
| x0 = 1 - (x0 + w) | |
| return x0, y0, w, h | |
| return [a._replace(bbox=rescale_bbox(a.bbox)) for a in annotations] | |
| def filter_annotations(annotations: List[Annotation], crop_coordinates: BoundingBox) -> List: | |
| return [a for a in annotations if intersection_area(a.bbox, crop_coordinates) > 0.0] | |
| def additional_parameters_string(annotation: Annotation, short: bool = True) -> str: | |
| sl = slice(1) if short else slice(None) | |
| string = '' | |
| if not (annotation.is_group_of or annotation.is_occluded or annotation.is_depiction or annotation.is_inside): | |
| return string | |
| if annotation.is_group_of: | |
| string += 'group'[sl] + ',' | |
| if annotation.is_occluded: | |
| string += 'occluded'[sl] + ',' | |
| if annotation.is_depiction: | |
| string += 'depiction'[sl] + ',' | |
| if annotation.is_inside: | |
| string += 'inside'[sl] | |
| return '(' + string.strip(",") + ')' | |
| def get_plot_font_size(font_size: Optional[int], figure_size: Tuple[int, int]) -> int: | |
| if font_size is None: | |
| font_size = 10 | |
| if max(figure_size) >= 256: | |
| font_size = 12 | |
| if max(figure_size) >= 512: | |
| font_size = 15 | |
| return font_size | |
| def get_circle_size(figure_size: Tuple[int, int]) -> int: | |
| circle_size = 2 | |
| if max(figure_size) >= 256: | |
| circle_size = 3 | |
| if max(figure_size) >= 512: | |
| circle_size = 4 | |
| return circle_size | |
| def load_object_from_string(object_string: str) -> Any: | |
| """ | |
| Source: https://stackoverflow.com/a/10773699 | |
| """ | |
| module_name, class_name = object_string.rsplit(".", 1) | |
| return getattr(importlib.import_module(module_name), class_name) | |